#ifndef _COMM_HPP_
#define _COMM_HPP_

#include<iostream>
#include<cstring>
#include<sys/ipc.h>
#include<sys/types.h>
#include<sys/shm.h>
#include<sys/stat.h>
#include<cstdlib>//exit
#include"log.hpp"
using namespace std;

Log log;

const int size = 4096;
const string pathname="/home/guangzhao";
const int proj_id=0x6666;

key_t Getkey(){
    key_t k=ftok(pathname.c_str(),proj_id);
    if(k<0){
        log(Fatal,"ftok error: %S",strerror(errno));
        exit(1);
    }
    log(Info, "create share memory success, shmid: 0x%x", k);
    return k;
}

int  GetShareMemHelper(int flag){
    key_t k=Getkey();
    int shmid = shmget(k,size,flag);
    if(shmid<0){
        log(Fatal,"create share memory error: %s", strerror(errno));
        exit(2);
    }
    log(Info,"creat share memory success, shmid : %d", shmid);
    return shmid;
}

int CreateShm(){
    return GetShareMemHelper(IPC_CREAT|IPC_EXCL|0666);
}

int GetShm(){
    return GetShareMemHelper(IPC_CREAT|0666);
}


enum{
    FIFO_CREATE_ERR = 1,
    FIFO_DELETE_ERR,
    FIFO_OPEN_ERR
};

#define FIFO_FILE "./myfifo"
#define MODE 0664

class Init{
public:
    Init(){
        //创建管道
        int n=mkfifo(FIFO_FILE,MODE);
        if(n==-1){
            perror("mkfifo");
            exit(FIFO_CREATE_ERR);
        }
    }
    ~Init(){
        int m=unlink(FIFO_FILE);
        if(m==-1){
            perror("unlink");
            exit(FIFO_DELETE_ERR);
        }
    }
};

#endif



